AdoptOpenJDK

AdoptOpenJDK was an open-source project that produced free, prebuilt binary distributions of the OpenJDK platform for a range of operating systems and hardware architectures. The goal was to provide reliable, up-to-date OpenJDK builds that developers and organizations could deploy independently of vendor-specific JDK releases. Distributions were available for Linux, Windows, and macOS across common architectures such as x86-64 and ARM, and for a variety of OpenJDK versions, including long-term support releases.

The project emphasized community governance, transparency, and compliance with OpenJDK specifications. Binaries were built from OpenJDK source under the GPLv2 with the Classpath Exception, and they were tested through automated pipelines to ensure quality.

In 2021, AdoptOpenJDK transitioned to the Eclipse Foundation and was rebranded as Adoptium. Under the Eclipse Foundation, Temurin became the flagship OpenJDK distribution, continuing the project’s aim of providing free, enterprise-ready JDK binaries at scale. The transition positioned the distribution under neutral governance with the aim of long-term sustainability and stronger alignment with the broader OpenJDK ecosystem.